Suction-nozzle for carpet-washing machines.



H.F.GRAY. SUCTION NOZZLE FOR CARPET WASHING MACHINES.

APPLICATION FILED JUNE25. 19H.

Patented Nov. 5, 1918.

2 SHEETS-SHEET H. F. GRAY. 'suon ou NOZZLE FOR CARPET WASHING MACHINES.

Z I. m 1 0 Nn nu mu n2 m P Mn H m. HHH .H Hh h l l l l l h hmlmmml l h H H H H I n H hw l l l lm I III HALLA I. GRAY, 01? DENVER, COLORADO.

I Q Specification of Letters Patent.

- sucrron-nozznn For. cAnrnr-wAsHme nmcmrurs.

Application filed ren 25, 1917. Serial No. 176,671.

To all 'whom it may concern:

Be it known that I, HALLAF. .GRAY, a

citizen of the United States, residin the city andcounty of Denver and tate of Colorado, have invented certain new and useful Improvements in Suction- Nozzles for Carpet-Washing Machines; and I do declare the following to be a full,'clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and t0 the characters of reference marked thereon, which form a part .of th s specification.

My invention relates generally speaking to machines for washing carpets, rugs, etc.,

i the top,

the carpet a uniform which are provided with a nap or pile. The complete machine with which I preferto employ the nozzle to which this application will be more particularly directed, is equipped with a fountain scrubber which travels in front of the nozzle and serves to loosen the dirt in the nap of the carpet .or rug, and mix the same with a sort of lather formed by the action of the brush which is supplied with the necessary soapy liquid. As the brush moves o'n,-the nozzle follows and through the medium. of a squeegee roller mounted in the nozzle, the soapy, dirty liquid is brought up out of the nap to by a centrifugal pump or fan, the top of WhICh is connected with a receptacle mounted on the machine, into which the dirty,

soapy liquid is discharged. The nozzle is also equipped with a device for combing the nap of a carpet or rug so that after the machine has passed over it, the nap all lies in one direction, thus givingthe surface of appearance throughout the area cleaned.

This application'is for-the most part a continuation of my prior application, Serial #145,351, filed January 30, 1917, entitled Improvements in carpet Washing and rins-. ing machineapatented September 18,. 1917, No. 1,240,799. r

Having briefly outlined my improvement I will proceed to describe the'same in detail reference being drawing, in which is illustrated] an embodiment thereof. Inthis drawing:

Figure 1 is a side elevation, partly in secwhere it is acted on by the suction- .of the nozzle, the suction being developed yrear of the" scrubber.

made to the accompanying tion, of a carpet washing machine equipped with my improved nozzle mechanism.

Fig. 2 is a section taken on the line 2-2, Fig. 1 looking downwardly. I 1

Fig. 3 is an end view on a larger scale illustrating the nozzle in detail.

Fig. 4 is a vertical, longitudinalsection of the nozzle taken on the line 44, Fig. 5, looking toward the right,'the squeegee roller being shown in. elevation.

Fig. 5 1s a plan view of the nozzle and the conduits communicating therewith.

The same reference characters indicate the same parts in all the views. Let the numeral 5 designate a suitable framework, upon the forward portion of which is mounted'a fountain scrubber, which Patented Nov. 5, 1918.

is supplied with a'soapy liquid from a tank 7 the brush being operated from a motor 8 through the mediumgof a worm. gear mechanism 9, which has a crank arm connection with a yoke 10,- connected in operative relation with the scrubber 6. This scrubber acts upon the soapy liquid to form a lather in the nap or pile of the carpet or rug 12, the dirt in the nap. being loosened and mixed with this soapy liquid. The machine travels over the surface to be cleaned in the direction indicated by the arrow a, Fig. 1 Hence, the nozzle 13, whose function is the removal of the dirty, soapy liquid, is arranged upon the machine in the i This nozzle consists of a-housing 14 which is of any desired length for cleaning an area of thecarpet' or rug over which the machine travels. As

shown in the drawings, the extremities-of the nozzle extend ashort distance beyond the opposite sides of the frame work of the machme, the nozzle being of the same length approximately as the scrubber with which it cooperates. The nozzle is closedexcept at the bottom where it is suflicientlyopen to allow enough .air to enter to remove the dirty, soapy liquid, which is brought to'the top by the squeegee roller 15. This roller may be journaled at the opposite ends of the nozzle in any suitable manner.

nected with each end of the nozzle by means of screws 17 which pass through a slot 18 and enter threaded openings in the end of the nozzle. The lower portion of the plate is provided with a roller bearing 19, which the journal 20 .of the roller engages, thus As shown in the drawing, a plate 16 is conmounting the roller in such a manner that it rotates ea] in the performance of its function. it is important that the roller be thus journaled, since it performs a very important function, and in fact, forms the support for the front part of the machine which rests on this roller. The roller squeegee is exceedingly important in a construction of this character, since it performs the necessary function of squeezing the dirty, soapy liquid out of the nap of the carpet or rug, and bringing it to the surface where it may be advantageously acted on by the suction, whilev at the same time it does not injure or wear the nap or pile, as would be the case if a scraper squeegee were employed. It should be explained in this connection that the problem of washing carpets and rugs is very different from that involved in washing floors, since the nap or pile of the carpet or rug is delicate and would be ruined by the action of a scraper squeegeef Furthermore, a machine of this character equipped with a scraper squeegee located as illustrated in the drawing, could only be operated with great difficulty on account .of the friction, While the roller bearing mechrnanism is illustrated and de-- scribed, it must be understood that the roller squeegee may be journaled in the ends'of the nozzle in any other suitable or practicable manner. a

The nozzle, as illustrated in the drawing, is provided with two rearwardly extending conduits 21, whose forward extremities are,

in communication with the body ion of the nozzle while the rear extremities communicate with the casing of the centrifugal pump 22, which is mounted on the rear extremity of the frame and communicates with a receptacle 2% through the medium of a short pipe 2a. In the construction of the apparatus the two conduits 21 are preferably cast integral with the bottom plate 24 of the machine, though it must be under stood that the invention is not limited to this specific construction.

To the rear portion of the nozzle is sc cured a nap-combing brush 25, which as illustrated consists of a head-piece 26 tending the entire length of the nozzle and carrying the necessary bristles 2?, the headpiece being secured to the nozzle by suitable fastening devices, as screws 28, The bristle portion of the nap coinbing device engages the or ile of the carpet or rug just in the rear of the nozzle and, therefore, is the last part of the machlne that acts upon the nap, and, hence, leaves the latter all lying in one direction, the nap being inclined toward the direction of the travel of the machine during the cleaning operation. When the machine is in use it is moved over the carpet or rug 12 by a person who grasps a handle 29, which is connected with the front part of the machine in any suitable manner and which is suitably equipped for controllin the passage of the liquid from the tank to the fountain scribber 6, After the scrubber has performed its function, as heretofore explained, the squeegee roller acts to remove the dirty, soapy liquid from the nap of the carpet and brings the same to the top where it is acted on through the'medium 01 the nozzle by the suction developed in the centrifugal pump 22, which also serves to force the dirty liquid into the receptacle 23 carried by the machine as heretofore explained.

Having thus what I claim is:

l. A suction nozzle for carpet washing machines having front and reardepending walls, aroller squeegee mounted in said nozzle and extending below the Walls thereof, there being a space between the squeegee and the front wall through which the suction force is adapted to operate, the roller being mounted closely adjacent the rear wall.

2. A suction nozzle for carpet washing machines having front and rear depending walls, a roller squeegee mounted in said n0zzle and extending below the walls thereof there being a space between the squeegee and the front wall through which the suction force is adapted to operate, theroller being mounted closely adgiacent the rear wall, and nap combing device mounted in the rear of the segues/ ec,

In nony whereof my signature.

EAL-nil. G-ltilill",

described my invention,

as j 

